function showLogin() {
	login.style.display = "block";
}
function showLogin1() {
	login1.style.display = "block";
}
function showLogin2() {
	login2.style.display = "block";
}
function showLogin3() {
	login3.style.display = "block";
}
function showForbid() {
	forbid.style.width = document.body.clientWidth;
	forbid.style.height = document.body.clientHeight;
	forbid.style.visibility = "visible";
}
/* ȫѡ */
function DoCheck() {
	var ch = document.getElementsByName("choose");
	if (document.getElementsByName("allChecked")[0].checked == true) {
		for (var i = 0; i < ch.length; i++) {
			ch[i].checked = true;
		}
	} else {
		for (var i = 0; i < ch.length; i++) {
			ch[i].checked = false;
		}
	}
}